def test_offer_requirements(self):
# (based on current protocol constraints)
self.assertEqual(TradeOffer.MinimumBuyOfferWithRate(500000000),
Constraints.minimumSwapBillBalance)
self.assertEqual(TradeOffer.MinimumSellOfferWithRate(500000000),
Constraints.minimumSwapBillBalance // 2)
self.assertEqual(TradeOffer.MinimumBuyOfferWithRate(62500000),
Constraints.minimumExchangeLTC * 16)
self.assertEqual(TradeOffer.MinimumSellOfferWithRate(62500000),
Constraints.minimumExchangeLTC)
# deposit is rounded up
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(500000000, 1 * e(7)),
1 * e(7) * 2 // Constraints.depositDivisor)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(250000000, 1 * e(7)),
1 * e(7) * 4 // Constraints.depositDivisor)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(62500000, 1 * e(7)),
1 * e(7) * 16 // Constraints.depositDivisor)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(500000000, 1 * e(7) + 1),
1 * e(7) * 2 // Constraints.depositDivisor + 1)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(250000000, 1 * e(7) + 1),
1 * e(7) * 4 // Constraints.depositDivisor + 1)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(500000000, 1 * e(7) - 1),
1 * e(7) * 2 // Constraints.depositDivisor)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(250000000, 1 * e(7) - 1),
1 * e(7) * 4 // Constraints.depositDivisor)
# (based on current protocol constraints)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(rate=500000000, ltcOffered=0),
0)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(rate=500000000, ltcOffered=1),
1)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(rate=500000000, ltcOffered=7),
1)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(rate=500000000, ltcOffered=8),
1)
self.assertEqual(
TradeOffer.DepositRequiredForLTCSell(rate=500000000, ltcOffered=9),
2)
def test_offer_creation(self):
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.BuyOffer,
5000, 375000000)
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.BuyOffer,
2 * e(6), 437500000)
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.BuyOffer,
2 * e(6),
500000000) # swapbill offered below minimum balance
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.BuyOffer,
1 * e(7) - 1, 500000000)
buy = TradeOffer.BuyOffer(1 * e(7), 500000000)
self.assertDictEqual(buy.__dict__, {
'rate': 500000000,
'_swapBillOffered': 1 * e(7)
})
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.SellOffer,
100, Constraints.minimumExchangeLTC - 1, 437500000)
self.assertRaises(
OfferIsBelowMinimumExchange, TradeOffer.SellOffer, 2 * e(6) // 16,
1 * e(6), 500000000) # swapbill equivalent below minimum balance
rate = 437500000
ltcOffered = TradeOffer.MinimumSellOfferWithRate(rate)
deposit = TradeOffer.DepositRequiredForLTCSell(rate=rate,
ltcOffered=ltcOffered)
sell = TradeOffer.SellOffer(deposit, ltcOffered, rate)
self.assertDictEqual(sell.__dict__, {
'_swapBillDeposit': deposit,
'rate': rate,
'_ltcOffered': ltcOffered
})
self.assertRaises(OfferIsBelowMinimumExchange, TradeOffer.SellOffer,
deposit, ltcOffered - 1, rate)
def MinimumSellOffer(self, rate):
ltcOffered = TradeOffer.MinimumSellOfferWithRate(rate)
deposit = TradeOffer.DepositRequiredForLTCSell(rate, ltcOffered)
return TradeOffer.SellOffer(deposit, ltcOffered, rate)